when we use the ball mill .we should be fully ready , ball mill is more expensive equipment, high, running fast, through  the operation we can adjust the value, the speed of adjustment in this mill is very professional, if we solve the speed problem modulation, then it will affect our mill production, the consequences are very serious. For the speed control of the ball mill has been concern, in fact, the ball mill during the grinding of minerals processing, use the most is the speed control theory, but the actual operation is also based on their feelings, the theoretical basis , summed up his experience, in order to mill perfect control. Zhengzhou vipeak industry basis of the experience accumulated over the years, practice guidance on how to better control the ball mill speed; Many users are aware that the mill speed directly determines the size of the effect of the state of motion of the cylinder body of the grinding media and grinding operations. When the speed is low, the ball mill was promoted a high degree of small, by the gravity of the ball itself roll down from the top of the ball charge slip was spilled off the state, then the impact of the ball is very small, but the abrasive strong ore is grinding stripping and grinding, the grinding effect. When the speed is high, the height of the ball was promoted. Out of the cylinder, the ball up to a certain height along the where about of the parabolic trajectory, in Paola state. Have greater impact into the falling point; ore was crushed by the impact, the highest grinding efficiency. Exceed a certain limit (high speed) when the mill speed, ball rotation with the cylinder instead of the whereabouts of, in the centrifugal operation. Then the ball just did not impact the role of a very small abrasive grinding.